Yarn-twisting apparatus.



No. 805,752. PATENTED NOV. 28, 1905. A. E. RHOADES. YARN TWISTING APPARATUS.

APPLICATION FILED MAY 25, 1905.

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" L IHIIIIIIIIE Amm PATENTED NOV. 28, 1905.

A. E. RHOADBS. YARN TWISTING APPARATUS.

APPLICATION FILED MAY 25, 1905.

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UNITED STATES PAENT OFFIOE.

ALONZO E. RHOADES, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

`YAFN-TWISTINC- APPARATUS.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application led May 25, 1905. Serial No. 262,136.

To cir/ZZ whom t may con/067%:

Be it known that I, ALONZO E. RHOADEs, a citizen of the United States, and a resident of Hopedale, county of Vorcester, State of Massachusetts, have invented an Improvement in Yarn-Twisting Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to apparatus for twistingand formingafancy yarnhaving bunchesor enlargements thereon at intervals; and it has for its object the production of novel and simple means for making the desired product, as set forth.

In United States Patent N o. 7 64,632, granted to me July 12, 1904, means are provided for making a fancy yarn with bunches of two or more different colors, a plurality of bunches being formed simultaneously upon the main yarn or core at each arrest thereof, both main and auxiliary yarns being delivered in continuous lengths.

In my present invention the fancy yarn is formed by binding or twisting in with a plurality of yarns a series of pieces or relatively short lengths of a relatively weak or readilylbreakable soft and larger yarn or roving,

meaning thereby a yarn so slack-twisted or having so little twist that it is practically or may, in fact, be roving, as commonly known in the art. This is delivered in continuous form to the binder-yarns; but the delivery is intermittent, while the binder-yarns are delivered continuously to the twisting instrumentality. Asa result, each arrest of delivery of the weaker yarn or roving causes a portion thereof to be broken off and bound in by and with the binder-yarns, forming a bunch, another bunch being started as soon as delivery of the bunch-forming yarn or roving is resumed and completed as before, when its delivery is again arrested. Avery odd and fancy yarn can thus be produced with great rapidity, the bunches being firmly bound in with the binder-yarns, which latter may be of colors contrasting with each other and with the softer yarn or roving.

The'various novel features of my invention will be fully described in the subjoined speciiication and particularly pointed out in the following claims.

Figure 1 is a front View, broken out near one end, of a twisting apparatus embodying one form of my invention, one of the twisterspindles being partly shown with its base and attached whirl. Fig. 1a is a sectional detail, to be referredto, on the line 1 1, Fig. 1, looking toward the left. Fig. 2 is a right-hand end elevation of the means for driving and controlling the operation ofthe intermitti nglyacting delivery-rolls for the bunch-forming yarn or roving. Fig. 3 is a transverse sectional detail on the line 3 3, Fig. 1, looking toward the right. Fig. 4 is an inner face view of the clutch-controller to be described. Fig. 5 is an inner face view of the two members of the clutch with which the controller coperates. Fig. 6 is a longitudinal sectional detail taken through the center of the clutch, its controller, and some of the adjacent parts substantially on the line 6 6, Fig. 4. Fig. 7 is a sectional detail, to be referred to, on the line 7 7, Fig. 4; andFig. 8 is a view showing a length of the bunch-yarn enlarged.

I haveherein shown myinvention embodied in a machine similar in general construction to twisting apparatus frequently employed for heavy yarns in order to hold the twist thereof; but the back set of rolls is shown as a double set and is intermittingly driven, while the single front set of rolls is driven continuously to produce the bunch-yarn in accordance with my invention.

Referring to Fig. 1, twisting instrumentalities or spindles S, linger-boards a on the guide-boards a and provided each with a guide-eye or pig-tail ax, the head A at the left-hand side of the frame and containing usual mechanism for positively and continuously driving the front set of rolls ff, and the roll-stands D may be and are substantially of well-known and usual construction, except in certain particulars to be hereinafter referred to. The stands D support the rollcarriers D for the top rolls of both the back and front sets of delivery-rolls, the lower front roll f being positively driven from the head motion and having its shaft fX extended the length of the frame, the drivinggear AX, Fig. l, being secured to the letfhand end of the shaft. The top front rolls f run loosely in bearings in the roll-carriers D and are driven by frictional contact with the roll f. The binder-yarns 510, two being' herein shown, are led down to the back of the front set of rolls and are separated and trav- TOO ersed by guide-bars g, suitably mounted on the traversed bar T, Fig. 8; but more than two binder-yarns may be used, if desired, said yarns passing between the rolls f f and thence through the pig-tails ctx to the twisting instrumentality.

I have herein shown the back set of rolls as a double set, the shafts of the lower rolls Z) b' at the left-hand end having fast thereon pinions 1 and 2, which mesh with an intermediate 3, so that said rolls rotate in unison in the same direction by means to be described, the corresponding top rolls bx 'X rotating loosely in bearings in the roll-carriers and being driven by frictional Vengagement with the lower rolls.

The bunch -forming member Z220, a soft, slack-twisted yarn or roving and usually having much more body or bulk th'an the binderyarns and being relatively much weaker, so as to be readily broken, is led to the nip of the rolls b /X by a trumpet t, as in Fig. 3, and thence forward between the rolls bx to the front set of rolls, and when the back set of rolls is in operation the bunch-forming' yarn travels with the binder-yarns and is vtwisted with them as they leave the front rolls ff.

When the back set of rolls is stopped, delivery of the bunch-forming yarn or roving 52 is arrested and the pull or drag, due to the continuously-running front rolls, breaks the bunch-forming yarn between the front and back sets of rolls, the broken-off portion being twisted in or bound with the binder-yarns, completing one end of a bunch.

Immediately upon resumption of delivery by the back set of rolls the leading end of the yarn or roving 520 will be caught by the binderyarns and carried forward with them, and the formation of another bunch is begun, the length of the bunch being determined by the duration of the delivery period of the inter- Inittingly-operating back set of rolls. By this 'operation a bunch-yarn is formed of the geueral character shown in Fig. 8, the bunches being formed by the separated pieces of yarn or roving 620, bound or twisted with the binderyarns bw. The longer the delivery periods of the back set of rolls the longer will be the bunches, the intervals between bunches being longer or shorter as the rest periods of the back set of rolls are longer or shorter.

1 will now describe the means for effecting the intermittent operation of said set of rolls and for varying the length of the delivery periods thereof.

A pinion 4 is secured on the right-hand end of the lower front-roll shaft fx in mesh with a large gear 5, rotatably mounted on a stud 6, adjustably secured on a suitable stand 7, the gear 5 in turn meshing with a pinion 8. (See dotted lines, Fig. 2, and in section, Fig. 6.) This pinion is iixedly secured to the hub 9 of a pawl-carrier, shown as a disk 10, loosely mounted on the extended right-hand end of the shaft 11 of the lower roll b of the back set of rolls, said shaft having an outer bearing at 12 in rthe stand 7. A pawl 13, fulcrumed at 14 on the pawl-carrier (see Fig. 5) and acted upon by a suitable spring 15, has an elongated tail 16, the pawl-carrier and pawl forming one member of a clutch and being loose relative to the shaft of th-e roll b', the tail of the pawl being long enough to project beyond the periphery of the pawl-carrier, as in Fig. 5. The cooperating member of the clutch is shown as a ratchet 17, keyed to the shaft 11 to rotate therewith, so that it is fast with relation to the roll Z2', the ratchet being placed adjacentl the face of the disk 10. (See Fig. 6.) The spring 15 serves to normally keep the pawl in engagement with the ratchet, and as the pinion 8 is continuously rotated through the gear 5 and pinion 4 the pawl-carrier is continuously rotated, and so long as the pawl and ratchet are in engagement the roll b/ and the roll geared therewith, as explained,will be rotated in unison, and the operation of the back set of rolls thereby effected to cause delivery of the bunch-forming yarn or roving. When the members of the clutch are disengaged, however, the back set of rolls will be stopped and the delivery of the bunch-forming yarn or roving will be stopped and the latter broken, as previously described. Adjacent the bearing 12 a gear 18 is loosely mounted on the shaft 11, said gear having secured to it, by suitable screws 24, Fig. 6, a clutch-controller, shown as a disk 23, having an inturned peripheral flange 25, provided with an internal annular shoulder 26. rl`he flange is shown in Fig. 4 as radially thickened to present two diametrically opposite cam surfaces or risers 27, projecting inward in the path of the tail 16 of the pawl. At the leading side of each riser the shoulder 26 is widened to form segmental seats 28, (see also Fig. 7,) on which is mounted a segmental cam or shoe 31, adjustably held in place by a screw-stud 30, entering an elongated slot 29 in the seat. (See dotted lines, Fig. 4.)

The clutch-controller and the clutch device herein shown and described are substantially the same as shown and described in my patent referred to, No. 764,632, and operate as therein set forth, and like reference-numbers are used herein to designate the different parts of the clutch-controller to facilitate comparison.

The stand 7 is adjustably secured to a bracket 20, Figs. 1 and 2, attached to a stand 21 on the main frame, the bracket having a lateral stud 22 thereon provided with a transverse hole or socket 22X, (see Fig. 1,) and the hub of a gear 19 is rotatably mounted on the stud, said gear meshing with the larger gear 18.

A removable bearing-stand 32, adjustably secured on the main frame of the apparatus by a bolt 33, (see dotted lines, Fig. 1,) sup- IOO ports a short rotatable shaft 34, having fast upon it at its outer end a pinion 35 in mesh with the gear 19, and at its inner end said shaft has secured to it a gear 36, in mesh with the pinion 4.

The pinion 35 and gear 36 constitute removable transmitting-gearing intermediate the actuating-pinion 4 and the gear 19, which drives the clutch-controller, and by introducing transmitting-gearing of different sizes the speed of rotation of the clutch-controller will be varied relatively to that of the pawl-carrier 10, the latter being driven from pinion 4 through gear 5 and pinion 8, as described previously, and as the said pinions are shown as of substantially the same diameter the pawlcarrier will be driven at virtually the speed of the roll-shaft fx; but the gearing intermediate the pinion 4 and the clutch-controller gear 18 is so constructed as to rotate the conltroller at a slower speed than the pinion 4 and the pawl-carrier, and consequently the pawl-tail will pass and be operated by one after another of the risers and segmental cams or shoes on the controller, as in my patent referred to. As in said patent, the engagement of the pawl-tail with a cam operates to Withdraw the pawl from the other member of the clutch-viz., the ratchet l7-and thereby the back set of rolls is disconnected from the actuating means in the present apparatus, and delivery of the bunch-forming yarn or roving 520 is arrested and the latter broken, as has been described. The rest period continues until the tail of the pawl wipes over the longitudinal edge of the shoe 31 and drops o' the end thereof, whereupon the spring 15, Fig. 5, immediately effects rengagement of the clutch members and rotation of the back set of rolls begins, so that the binder-yarns and the leading end of the bunch-forming yarn or roving begin the formation of a new bunch.

The position of the shoes 31 determines the spaces between bunches and also the length of the bunches, for by setting the shoes in toward the risers 27 the duration of the rest periods is shortened and the distance between bunches will be decreased, while the length of the bunch is correspondingly increased to conform to the distance between the end of one earn and the riser of the neXt one. lf the cams are moved outward from the risers, the length of the bunches will be decreased, while the distance between bunches is increased.

Of course lthe differential speed between the pawl-carrier and the clutch-controller Will have its effect on the length of bunch and distance between adjacent bunches.

By changing the clutch-controller for one having a diierent number of cams and varying the transmitting-gearing the distance between and length of bunches will be varied.

By removing the transmitting-gearing, as may be effected when the bolt 33 of the stand 32 is loosened, the actuating connection between the pinion 4 and the clutch-controller gear 18 is thrown out, and at such time the controller is held stationary by dropping a locking-pin 37 through a hole 19X in the hub of the gear 19 into the socket 22X, (see Fig. 1,) thereby locking the gear and controller from rotation. The pawl then travels around within the fXedly-held clutch-controller, and the length of bunch and distance between bunches will be controlled thereby, according to the adjustment of the cam-shoes and the speed of rotation of the pawl-carrier. The back set of rolls is adjustable toward and from the front set, this adjustment being eiected in usual manner to compensate for the varying lengths of staple in the different grades of roving used for the bunch-forming member 52, the back set of rolls being moved forward for short staple, and for long staple the said rolls are moved farther back, the roll-stands D being of usual construction to permit such adjustment. As the shaft 11 of the lower back roll b' partakes of this movement toward the back or front of the frame the bearing 12 for its right-hand end must be adjustable, and for the purpose the stand 7 is vertically adjustable in the bracket 2O by means of the bolt 38, Fig. 2, which passes througha vertical slot 39 in the bracket 20, while the latter is adjustable fore and aft on the fixed stand 21 by bolts 40, passing through horizontal slots 41 in said stand. (See Fig. 2.) For a slight adjustment the gears 18 and 19 will remain in mesh; but for a greater adjustment the gear 19 must be changed for one having the requisite pitch, necessitating a corresponding change in the pinion 35.

The arrows 42, Figs. 2 and 4, indicate the direction of rotation of the clutch-controller, and the arrows 43 in Figs. 2 and 5 indicate the direction of rotation of the pawl-carrying member 10 of the clutch. The arrangement herein illustrated produces relatively small bunches close together, because the clutch and clutch-controller are rotated in opposite directions, (see the arrows 42 43, Fig. 2;) but by removing' the transmitting-gearing 35 36 and ,locking the clutch-controller, as hereinbefore referred to, a much longer bunch will be produced with longer intervals between bunches, for then the relative speed of clutch and clutch-controller is reduced, as will be manifest,as the clutch-controller is stationary.

Various changes or modifications in different details of construction and arrangement may be made by those skilled in the art withoutdeparting from the spirit and scope of my invention, one practical embodiment of which is herein shown and described.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In apparatus of the class described, a twisting instrumentality, a front set of continuously-driven rolls to deliver thereto a plurality of binder-yarns to be twisted together, a back set of intermittingly-driven rolls for a relatively weak yarn or roving, to deliver the latter intermittingly to and to be twisted or bound with the binder-yarns, and adjustable means to vary the delivery periods of the intermittingly-driven rolls, the bunch-forming portions passing through both sets of rolls and being severed by arrest ot' the back set of rolls.

2. 'In apparatus of the class described, a front set of delivery-rolls, a back set of delivery-rolls adjacent thereto, continuouslyrunning actuating means directly connected with the front set of rolls, a clutch intermediate said means and the back set of rolls, and comprising two cooperating members respectively ast and loose with relation to the back set of rolls, the loose member being` driven by said actuating means, a clutch controller adapted to be driven by said means with a differential speed relative to the loose-clutch member, to intermittingly effect disengagement of the clutch members and thereby arrest the operation of the back set of rolls, removable transmitting-gearng between the actuating means and the clutch-controller, and a device to lock the latter from rotation when said transmitting-gearing is removed, whereby a change in the time or' the rest and delivery periods of the back set of rolls-will be effected.

3. In apparatus of the class described, a set of delivery-rolls, a ratchet rotatable with one of the rolls of the set, a cooperating pawl,l a rotatable pawl-carrier loose with relation to said roll and continuously driven, a controller concentric with the pawl-carrier, and having an adjustable cam to intermittingly engage said pawl and withdraw it from cooperation with the ratchet, means, including removable transmitting-gearing, to continuously rotate the controller at a slower speed than the pawlcarrier, and a device to hold the controller from rotation when the transmitting-gearing is removed.

In testimony whereof l have signed my name to this specification in the presence of two subscribing Witnesses.

ALONZO E. RHOADES.

Witnesses:

GEORGE O'rIs DRAPER, ERNEST W. WooD. 

